\begin{tikzpicture}
    \tkzDefPoints{0/0/B,  3/0/C,  1.3/3/A}
    \tkzDefPointOnLine[pos=0.7](A,B)  \tkzGetPoint{D}
    \tkzDefPointBy[translation= from D to A](C)  \tkzGetPoint{F}
    \tkzInterLL(A,C)(D,F)  \tkzGetPoint{E}

    \tkzDrawPolygon(A,B,C)
    \tkzDrawSegments(C,F  D,F)
    \tkzLabelPoints[above](A)
    \tkzLabelPoints[left](B,D)
    \tkzLabelPoints[right](C,F)
    \tkzLabelPoints[above, xshift=0.3em](E)
\end{tikzpicture}

